Because you didn't state any info about your graphics card, I think that it's only the build-in intel gpu. I also have a very bad PC, but I can run the newest version of SEUS Shaders at low settings with about 20-30fps. But it's still best to play without shaders, if your PC isn't that good.
At the newest version of SEUS Shaders you are able to change the settings in-game. I would recommend trying this one.